Content detection method of Chinese medicine preparation for treating gastropathy
The technology of a traditional Chinese medicine preparation and a detection method is applied to the content detection of traditional Chinese medicine preparations and the field of traditional Chinese medicine preparations for the treatment of gastric diseases, and can solve the problems of poor reproducibility, unstable quality, and unfavorable quality control of Jinlianweishu tablets.
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Embodiment 1
[0016] The research of the content assay method of embodiment 1 tetrahydropalmatine
[0017] (1) Instruments and reagents
[0018] High-performance liquid chromatography: Agilent 1100, G1311A (quaternary pump), G1314A (VWD detector), BP211D electronic balance of 1 / 100,000.
[0019] Corydalin reference substance is provided by China National Institute of Pharmaceutical and Biological Products for content determination, the purity is (above 98%), methanol is chromatographically pure, water is double distilled water, and other reagents are analytically pure. The Jinlian Weishu tablet to be tested was provided by Guangxi Wanshoutang Pharmaceutical Co., Ltd.
[0020] (2) Chromatographic conditions Chromatographic column
[0021] The mobile phase volume ratio is methanol-water-triethylamine (65:35:0.5), the flow rate is 1ml / min; the detection wavelength: 280nm.
[0022] (3) Selection of extraction time
[0023] Take about 0.5g of Jinlian Weishu Tablets (batch number: 120601, spe...
Embodiment 2
[0056] The determination of the content of tetrahydropalmatine in embodiment 2 Jinlian Weishu Tablets
[0057] The contents of 10 batches of Jinlian Weishu Tablets were determined respectively according to the above-mentioned content determination method, and the determination results are shown in Table 7.
[0058] Table 7 Containment test results of 10 batches of samples
[0059]
[0060] The test results of 10 batches of Jinlian Weishu Tablets (specification: small tablets (film-coated tablets)) show that the minimum content of tetrahydropalmatine in 10 batches of samples is 1.140mg / tablet. The gold contained in the preparation shall not be less than 0.6 mg in terms of tetrahydropalmatine.
Embodiment 3
[0061] Embodiment 3 compares the content detection method of two kinds of tetrahydropalmatine
[0062]The original standard method: take 20 pieces of Jinlian Weishu Tablets (batch number: 120601), remove the coating, accurately weigh, grind finely, take 3g, accurately weigh, put in a stoppered Erlenmeyer flask, add 5ml of concentrated ammonia test solution to make After wetting, add 20ml of chloroform precisely, seal it tightly, weigh it, soak it for 2 hours, treat it with ultrasonic for 30 minutes, let it cool, weigh it again, make up the lost weight with chloroform, shake well, filter it, and take it precisely Filtrate 5ml, evaporate to dryness, add appropriate amount of methanol to the residue to dissolve, transfer to a 2ml measuring bottle, dilute to the mark with methanol, shake well, and use it as the test solution. Another appropriate amount of tetrahydropalmatine reference substance was accurately weighed, and methanol was added to make a solution containing 0.5 mg per...
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